Free-form deformation of solid geometric models
SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Extended free-form deformation: a sculpturing tool for 3D geometric modeling
SIGGRAPH '90 Proceedings of the 17th annual conference on Computer graphics and interactive techniques
The NURBS book
D-NURBS: A Physics-Based Framework for Geometric Design
IEEE Transactions on Visualization and Computer Graphics
Specification of freeform features
SM '03 Proceedings of the eighth ACM symposium on Solid modeling and applications
Design of solids with free-form surfaces
SIGGRAPH '83 Proceedings of the 10th annual conference on Computer graphics and interactive techniques
Global and local deformations of solid primitives
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Generalized filleting and blending operations toward functional and decorative applications
Graphical Models - Special issue on SMI 2003
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A new technique for creating freeform shapes, called parameterised, constraint-based wrapping, is presented. Here, a shape is defined by a parameterised cross-section that is placed at several positions along a trajectory lying on a freeform surface. The shape is determined in such a way that a seamless connection is established with the existing shape. The mapping between the parameters and the eventual shape is achieved by specifying combinations of geometric and algebraic constraints in a generic shape definition. Specific properties of the wrap shape can be declared in this definition. Parameterised, contraint-based wrapping provides a way of defining freeform geometry in a more intuitive and controlled way than previously possible for similar shapes. It can be applied in a wide variety of areas, and provides an important addition to the collection of existing modelling techniques.